David Duggan rode as a professional jockey in Ireland, Germany, Australia and India. In 1993 he moved to California to work for Neil Drysdale, in 1995 he worked as an assistant to John Kimmel until 2000, then joining Eoin Harty and Godolphin as an assistant trainer, spending time in Dubai, Santa Anita and Arlington Park.

In 2005 he set up training in New York, having success with graded stakes winners such as Porte Bonheur, Stud Muffin, Drafted, Kant Hurry Love and Sunday Girl. On the ballot for the first time three years ago, David was elected to the NYTHA Board in 2023. He will work hard to create a platform for New York horsemen to thrive.